The global stock market downturn today, 13 July 2026, is a stark reflection of investors' growing unease about the escalating US-Iran tensions over the strategic Strait of Hormuz. A sharp decline of 2.5% in the FTSE 100 and similar losses in major European indices like the DAX (3.1%) and CAC 40 (2.7%) indicate that the market is pricing in a heightened risk premium due to the potential for a wider conflict.
The renewed clashes centre on control of the crucial shipping lane, which accounts for approximately 20% of global seaborne oil exports. Military posturing and direct confrontations have increased significantly, fuelling fears of a broader conflict that could disrupt global trade and energy supplies. The swift market reaction is evident in investors' increasing preference for safe-haven assets like gold (up 1.5%) and government bonds (yielding an additional 0.2%).
The FTSE 100's significant losses are mirrored by those experienced in other European markets, underscoring the widespread perception that the geopolitical tensions pose a substantial threat to global economic stability. British firms with international operations or energy imports will be particularly affected by this market volatility.
Oil prices have surged dramatically, with Brent crude nearing an all-time high of $125 per barrel. The critical Strait of Hormuz choke point has severe implications for global energy markets, and any disruption would exert inflationary pressure on economies worldwide, including the UK, potentially impacting consumer spending and business costs.
The UK Government's Foreign, Commonwealth & Development Office (FCDO) is closely monitoring the situation, but no specific travel advice updates have been issued today. British nationals in or planning to visit the Middle East are advised to remain vigilant and follow local authority instructions, building on the FCDO's existing caution against all but essential travel due to security concerns.
The broader implications for international trade are also a significant concern. Any prolonged disruption in the Strait of Hormuz would not only impact oil shipments but also other vital goods, potentially leading to supply chain bottlenecks and increased shipping costs globally, which could dampen economic growth and trade volumes impacting UK businesses involved in international commerce.